#define SCREEN_WIDTH 320
#define SCREEN_HEIGHT 480
#define SCREEN_CELL_LENGTH 15

// Base Tank Constant
#define BASE_TANK_WIDTH 30
#define BASE_TANK_HEIGHT 30
#define BASE_TANK_BARREL_WIDTH 5
#define BASE_TANK_BARREL_HEIGHT 10

typedef enum {
	up = 0,
	down,
	left, 
	right
} Direction;
